Edging mill



R. J. BANNER June 9, 1931.

EDGING MILL Filed May 5, 1928 I N VEN 7'01? EabznfJBa/uzar: W I 3 WITNESS Patented June 9, 1931 "UNITED STA Bonnier J. or Youndsrowa, 0310 y Y gnome MILL- ap lication filed na -5, 1928. Serial ire-275,332; A

In rolling articlesof the character of those 7 termed flats,- skelp, strips, hoops, bands and a .duce a section havin contour o r for both 1'0 cal rolls or by vertical rolls incorporated as" .a part of the mainrrolling mill but-ineither the like in the steel trade 't is necessaryto slightly reduce the width of the articles by the ap lication of rolling action to the edges thereof for the purposegof maintaining a uniform width in the article or in order to proedges of thedesired fected by means of edging mills having verticase the necessary machlnery is of complicated characterand involves a relatively heavy expense for upkee Particularly in the rolling of the material -known as grooved skelp has great diificulty been experienced with the machines hitherto employed in producing asection of uniform width having uniformly square ed edges of a desired bevel or taper an with sharp corners. The difficulty in efiecting this desired result generally arises'from' uneven temperature of the piece being rolled but may be due to some other causes ually hard tocontrol under practical conditions of operation and manifests itself in uneveii edges-and uneven or non-uniform width of the rolled'mate'rial, both of'these conditions being produced because the grooved passes in the rolls are alternately over-filled or under-filled' by conditions: exist when plain rollswithout grooved passes are employed and with a view, under these conditions, of minimizing or altogether eliminating variations in the width of the piece as well as to produce a piece having satisfactory edgis, one or more edging mills'are introduced tween the various passes or beyond the finishing ,as to operate on and true up the edges of the angle of 90 while traveling With thev same ob'ect in view the ,plece when of comparative y narrow width is sometimes twisted or turned through an from one stand of rolls to the'next in such manner that the second stand performs the work of an edgin mill upon the piece whichis again turn these purposes. This operation has heretofore generally been ef-' sharp corners and the piece as it passes there through. In a modified degree the same.

1 now bemade'.

pass so horizontal rolls.

a This procedure, however, is open to various practical objections and .in

paratively narrow width.

any case is limited to use withpieces of comprincipal object of my invention there- S. TEN

down flat before entering the next-pair'of fore is to provide means in the nature of an edging mill of'improved'and atly simplified design which may be sati s fiictorily employed in the rolling of grooved skel -as well as in the rolling of other material 0 rectangular or any other cross section to produce an article of uniform size and width having uniformly squat-e, beveled or tapered edges as the case may be. A further object of my invention is to providej an edgin mill forthe performance of the aforesald ction which is of sim le design, which may be rapidly adjusted or use 1 with different widths of material or those having diflerent sections, which. is so con- 7 structed as to facilitate repairs in case of] necessity and in which because of the comparatively light weight "of the various parts. replacements can be readily made when re quired at a minimum of expense with the re- Y sult that the useof my invention tends to facilitate-production, reduce operating costs and improve the ultimate product.

My invention further includes other objects, advantages and novel features of design, construction and arrangement hereinafter more particularly described or which will be apparent from the accompanying drawings in whichI have illustrated a preferred embodiment bf the invention to which reference will n the said dra r i view of anedging 1m em odying the prin-v ciples of my invention, a piece of skelpbeingj e l front view 1 is a top plan suitable way; as the particular shape of this base will necessarily vary in conformity with the construction of the runout table or other shafts are verticall ties; these housings are preferably tied together transversely by rails 7,8.

Within the side members and housings is suitably journaled the lower horizontally extending pinch roll shaft carrying at its center the lower pinch roll 11 while the upper pinch roll shaft 12 carrying the upper pinch roll 13 is journaled in the housings 5, 6; these spaced one above the other and have their respective pinch rolls disposed in vertical alignment, Desirably the lower shaft 10 is disposed with its axis substantially on the plane of separation be-- tween the upper housings and side members and in such manner that by taking off the housings 5, 6 it may be readily removed from the mill, while to facilitate removal of the upper pinch roll shaft which is ournaled in vertically slidable boxes 14 disposed in slots 1' with removable caps in the upper housings, the latter are provided 15, 16 which can be readily taken ofl to permit the'boxes to be lifted out vertically with the shaft. Springs 20 disposed in the slots above the boxes and beneath the caps'may be compressed .to any desired extent by adjusting screws 21 whereby the pressure of the upper pinch roll on the Work passing through the mill may be adjusted to any desired degr ee.

For driving the lower pinch roll, the lower, pinch roll shaft'10 is provided witha bevel gear 22 on one of its ends adapted to mesh with a corresponding gear on the runout table line shaft (not shown), this being a convenient source from which to derive thenecessary power but. any other suitable source may be utilized if desired. In the particular embodiment of the invention illustrated, no driving mechanism is shown for the upper pinch roll shaft but it is obaims, to those familiar with the art that the same may be provided if desired and may be of any suitable form adapted to drive the upper shaft at the same rate as the lower while, under some conditions, it may be preferred to drive the upper shaft alone without driving the lower one. D

. For effecting the requisite work on the lateral edges of the piece of skelp or other material M as it passes through the mill, two edging rolls 25, 26 are disposed in laterally spaced relation on opposite sides of the pinch rolls and respectively arranged to rotate on axes preferably but not necessarily. normal to the axes of the pinch rolls in the same plane or in a plane parallel to that in which the latter are disposed." These rolls are similarly mounted, each being carried in a yoke-like vframe 27 provided with a slot for thereception of the roll which is arranged to revolve on a suitable pivot 28 carried by the frame; if desired the roll may be provided with an anti-friction bearing of any suitable type. One end of each of the frames 27 is pivoted on a suitable pivot 29 between the rail 7 and a projecting arm 30 extending inwardly from the adjacent housing so it can swing about thepivothorizontally while its opposite end overlies the opposite rail 8, and is adapted to be secured thereto by a clamping bolt 32 carrying a nut 33 at its lower extremity and extending downwardly through a slot 34 in the yoke and a corresponding slot 35 registering therewith and formed in the rail whereby the yoke may be rigidly secured to the rail in any position of angular adjustment to which it may be moved about the pivot v29. To facilitate exact adjustment of the positions of the vokes and in turn of the edging trolls which they carry, adjusting screws 36 carrying lock nuts 37 are extended through the housings respectively adjacent the yokes so as to bear on the outer faces thereof as best shown in Fig. 1 so that when the clamping bolts 32 are loosened the yokes may be moved inwardly by setting up on the adjusting screwsor moved outwardly by hand after the latter are backed off. Since during the operation of ,the'mill the thrust of the work piece on the edging rolls is exerted outwardly in opposite directions, the adjusting screws 36 arethus, in large measure, effectiveto resist and support this thrust thereby correspondingly relievingthe clamping bolts 32' with the result that after the desired adjustment of the edging rolls is effected i-t is unnecessary in order to preservesuch adjustment to set up the clamping bolts as tightly as might otherwise be required in the absence of adjusting screws.

Prior to the operation of-the mill it is necessary to select and install therein a pairof pinch rolls of a width suitable for use 1 wlth the particular width of skelp or other material which is to be rolled, but it will be observed that it is unnecessary to preserve any exact relation between the width of the pinch rolls and the width of the skelp other than to have the former somewhat narrower than the latter s 0 as to leave the edges of the work piece clear for the operation of the edging rolls. It is also necessary to install in the mill edging rolls whose profiles or faces are suitable for the edge work to be performed on the material which is be rolled; thus, for example, when thelatteron the part of theoperator after it is once is be of rectangular section, havmg their faces parallel with their axes edging rolls 7 (as shown) will beemployed, but where the and the sp rolls is threefold; first, to insure the edges of the'skelp are to be beveled, grooved or the likeedging rolls having correspond ingly formed faces will'he utilized. The proper rolls having been suitably installed 1n the mill, the edging rolls are then adjusted by means of the adjusting screws so as to provideva pass of proper width and then clamped in position byvthe clamping'bolts,

sure on the skelp 'to' insure its being fed through the mill by the pinch rolls, thus utting the mill intoconditlon for o ration. uring the' latter, the function .of t e pinch I passa e of the work through the machine particular y after the rear end of the work has cleared the preceding stand of rolls for as the edging rolls are undriven and thus incapable in itsfurther progress wolild it not for the thrust exerte The second function of the pinch rolls isto assist in advancing the work through the machine when-the latteris 10- themselves of moving the work along, the

moment the latter clears. the preceding stand (Pin h H on it by the c ro s.

cated so far from the preceding stand of rolls thatthe thrust of thelatter tends to buckle the work lengthwise as it encounters the resistance offered by the edging rolls,

and plerhaps most important function of the pin rolls, however, is to prevent the work from archin transversel on itself under'the action of t e edging ro Is as it is obvious that this arching, should it occur, would prevent the production of strai ht and umform edges onthe work. Exten ing as a in? -,as to conform thereto.

do across the major portion of the"work contacting with the upper and lower faces thereof substantially coincident with the line or zone in which the thrust of the edging rolls is delivered to the lateral edges of the work, the pinch rolls thus serve to ef-' fectuallyprevent the arching of the work and consequently insure the desired uniformit and straightness ofthe edges therea usfor the most satisfactory conditions of operation, the pinch rolls should be of a'width approaching that of the workand adjusted to. exert sufiicient pressure thereon to prevent any arching or trans-- verse bending thereof, and further, of course,

when the upier and lowersurfaces of the latter are not at, the faces of the rolls should be grooved, arched or otherwise formed so It will thus be apparent that an edging rolling millor the like is substantially automatic in action and attention I rings 20 are also adjusted by means .of adjusting screws 21 to exert suflicient presarrested were adjustedfor a particular kind and size .of

work. Moreover, by reason of its simple. and rugged constructionit, is not liable to ed under" get out of order or become da the severe conditions of operation to which v machines of this character are necessarily sub ected, while the adjustments necessary to adapt the mill to different classes of work considerable particularity, I do not thereby .deslre or intend to confine myself to any pre cise details of desi 11, construction and ar-,.

rangement of the different partsas various modifications and changes may. be made therein to adapt the machine for operation under'various conditions or for other purses as may be desired, without departing rom the spirit and scope of the invention as defined-in the appended claims.

Having thus described my invention, I

claim and desire to protect by Letters Patent of the United States: v

1. In a mill of the class described, the combination of a pairof vertically spaced pinch rolls rotatable on horizontal axes, means for driving at least one of said rolls, means for adjusting the pressure exerted by the rolls on a workpiece disposed between them, a pair of edgin rolls rotatable on vertical axes and substantially horizontally aligned with the plane of separation between the pinch rolls and laterally spaced on opposite sides there' of respectively, a frame arranged to support each edging, roll substantially midway between the ends of the frame, means for sup-- porting each end of the frame, and means for adjusting the position of the frames to vary the distance between the edging rolls.

2. The combination of a pair of verticallyspaced pinch rolls rotatable on horizontal axes, means for driving at least one "of said rolls, means for adjusting the pressure excited by said rolls on a workpiece dis osed between them,.a pair of edging rolls reely rotatable on vertical axes and disposed subj stahtiall midway" between the axes ofrotation o the pinch rolls and laterally spaced 7 on'op osite sides thereof respectively, a pivoted rame supporting each edging roll and movable at one end about a vertlcal pivot, means'for moving each frame about its pivot.

to effect adjustment of the distance between.

the edging'rolls, and means for clamping the other ends 'of the; frames in adjusted position..

3. Ina mill of the class'described, the combination of. a pair of laterally spaced hous-' ings, a pair'o vertically'spaced, pinch rolls disposed therebetwen, rotatable on arallel' axes and adapted to engage opposite aces of a work piece passing between them, means said frames rotatable respectively on axes substantially coincident with the plane of the axes of the pinch rolls and adapted to engage other faces of the work piece, and adjustable means carried by the housings 2 adapted to resist outward lateral displacement of said pivoted frames.

4. In a mill of he class described, a pair of laterally spaced housings, a pair of longitudinally spaced rails supported thereby, a pair of vertically spaced rotatable pinch rolls adapted to engage opposite faces of a work I piece disposed between them, a pair of frames respectively pivotall supported by one of said rails and adaptiid to be adjustably secured to the other rail, and ,an edging roll supported byeach. frame between said rails adapted to engage the work piece as it passes between the pinch rolls and rotatable on an axis lying substantiallyin'the plane of the' axes thereof. 5. In a millof the class described, a pair of laterally spaced edging rolls, means for supporting said edging rolls compris-',.

ing a pair of frames, means for supporting said frames comprising a pair of rails longitudinally spaced on opposite sides of 7 said rolls, one end of each frame being pivotally supported by one of saidrails and the opposite ends of said frames being adjust; ab y supported by the other rail, means adapted to operatively clamp said frames to said last mentioned rail, means operative to assist in retaining said frames in a predeteroperatively securing the other end of each frame 'to the other rail, and means for adjust- I ablylimiting the outward pivotal movement 'of each frame.

In witness whereof, I have hereunto setmy hand this 30th day of March, 1928. 7 ROBERT J. BANNER.

minedlateral relationship, and' a pair of pinch rolls rotatable on axesperpendicular tolthe axes (Lf the edging rolls and in a plane substantially coincident therewith adapted to .en ge a work piece and through rotation .to e ect the passage thereof between them and between 1 e e g ng rolls. Y 6, Ina mill of the class described, a, ai f Qhoriiontal pinch rolls, W housings disposed upon 'oppositesides of the rolls and forming" journals therefor, said housing being respectively vertically separable substantially in the plane of the axis of the lower roll to'per- Jof said rolls, anedging roll rotata edadjacent the center of each frame, means for ivotally securing one end ofeach frame to t e adjacent rail, adjustable means for v mit removal thereof and also comprisin means to permit-removal of the lip-per rol whereby said rolls may be readily interchanged when required, a pair of transversely extending horizontal rails disposed on opposite sides of said rolls, a-pair offrames respectively disposed adjacent the opposite ends 1y mount- 

